Ephraim Feig, Fred Greenleaf
Applied Optics
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Ephraim Feig, Fred Greenleaf
Applied Optics
Don Coppersmith
Journal of Cryptology
Richard Arratia, Béla Bollobás, et al.
Discrete Applied Mathematics
Don Coppersmith, Peter Doyle, et al.
Journal of the ACM (JACM)